What is the World Population Estimate for 2050?

The global human population is projected to grow by more than 2 billion people by 2050, the equivalent of an additional China and India, in terms of their human populations today. That breaks down to about 75 million people a year, roughly equivalent to the entire human population of Iran.

More facts about global growth:

Most of the world's human population growth is expected to take place in nine countries: India, Pakistan, Nigeria, Democratic Republic of the Congo, Bangladesh, Uganda, United States, Ethiopia and China, in a descending order of growth percentage.

Asia alone is expected to have more than 5 billion people by 2050, which means that approximately half of the world will live in Asia. North America is expected to have only 500 million people in total — 10 percent of that of Asia.

Despite the massive human population growth, fertility among people is actually declining in some countries. In fact, global human fertility is expected to decline by about half a child per woman by 2050. Increased fertility among people in certain countries, combined with increasingly longer life expectancy, however, means that the world's human population will continue to grow.